A new study highlights betaine, a natural molecule boosted by long-term exercise, as a key player in slowing ageing and reducing inflammation.

For years, scientists have tried to unpack why regular exercise keeps the body young while a single tough workout can feel like it knocks everything off balance. A new study published in Cell has revealed some important ideas. Researchers from the Chinese Academy of Sciences and the Xuanwu Hospital Capital Medical University tracked how the body reacts to training over time and found a molecule quietly doing some heavy lifting behind the scenes.

The compound is betaine - something the kidneys produce naturally and a nutrient you also get from foods like spinach or beets. Researchers found that betaine levels not only rose during long-term

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